Unable to open file /Access Control allow origin error

I have added Access Control allow origin in head in my file which i am trying to access still i am unable to access file. I have added following line of code in my file. I am working on web forms
Response.AppendHeader("Access-Control-Allow-Origin", "*");
Here is my Code:
<script src="https://cdn.flexmonster.com/flexmonster.js"></script>

<script type="text/javascript">
var pivot = new Flexmonster({
container: "pivot-container",
componentFolder: "https://cdn.flexmonster.com/",
toolbar: true,
beforetoolbarcreated: customizeToolbar,
report: {
dataSource: {
dataSourceType: "json",
/* URL to the Data Compressor */
filename: "http://sms.iblhc.com:1980/mob/rrfi.aspx"
}
}
});
function customizeToolbar(toolbar) {
// get all tabs
var tabs = toolbar.getTabs();
toolbar.getTabs = function () {
// delete the first tab
delete tabs[0];
delete tabs[1];
return tabs;
}
}
</script>
I have attached screenshot